Prone bone

M/F · Vaginal penetration · From behind

Posed figure

Prone bone sex position — posed figure showing body placement for 2 people

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Keypoint template

ReceivingPenetratingCOCO-17 template · schematic, not to scale

Attributes

Position family
One-on-one
Primary act
Vaginal penetration
Partner arrangement
From behind
Penetration type
Vaginal
Facing
Front to back
Dynamics
Thrusting
Support / surface
Flat surface / bed
Participant count
Two
Composition code
M/F
Source medium
Both
Physical difficulty
Low
Prevalence in adult media
Common
Intensity tier (compliance)
Explicit

Common camera framing

RearOverheadSide profile

Description: Flat rear entry: the receiving partner lies fully prone, face down with legs extended and hips against the surface or lifted slightly, while the penetrating partner lowers into a plank above and enters from behind. Weight settles through the receiving partner's pelvis, so thrust travels a shallow, near-horizontal line, and the flattened hips give a tighter angle than kneeling rear entry. The flattened form of doggy style, it anchors the prone rear-entry family.

Variations: A pillow under the hips steepens the entry angle; the receiving partner's legs stay pressed together or spread. The arrangement serves vaginal and anal penetration.

On camera: Rear and overhead framings are standard, with side profile as the alternative; the stacked prone bodies form the characteristic silhouette.

AI design considerations: Render two prone figures layered with only a small vertical offset; limb spread is minimal and occlusion strong, so hip registration and a clean lower-figure outline carry the pose.

Historical provenance

Where this position appears in historical sex manuals, erotic art & literature · full timeline →

  • Clinging CicadaChinese (Han dynasty tradition) →

    Su Nü Jing (Classic of the Plain Girl) — attributed to the Plain Girl dialogues with the Yellow Emperor · c. 2nd century BCE–2nd century CE; preserved in the Japanese Ishimpō (984 CE)

    The Nine Ways' prone press, named for a cicada flat against bark.

  • Vyanta-bandha (prone class)Indian (late medieval) →

    Ananga Ranga — Kalyanamalla · 15th–16th century CE

Generating this position

A starting prompt composed from the catalog vocabulary. Every tag is verified to exist and not be deprecated. Compose across wardrobe, scene and expression in the prompt builder.

Booru-tag checkpoints

1boy, 1girl, hetero, prone_bone, on_stomach, sex_from_behind, lying_on_person, on_bed, vaginal

negative: bad_anatomy, bad_hands, censored, monochrome, 2girls, 3girls, 2boys, 3boys

Image to video (Thrust (deep))

long-range reciprocating motion along the body axis, full amplitude, torso following the hips, camera is locked on a tripod and does not move.

Motion only. The still you condition on must already carry the position, wardrobe and scene: restating them causes drift.

Expected figure count: 2. Global pose conditioning does not make a diffusion model count bodies. Count figures and limbs at full size before judging quality, because thumbnails hide the failure. The tag prone_bone is broader than this position: prone_bone constrains only the receiving body, flat on the stomach, penetrated from behind, and says nothing about the penetrating partner, so it discards the plank-above contact that defines this entry: the top partner lowered full-length onto the receiver with weight settling through the receiving pelvis. The tag equally covers the jockey arrangement, where the top partner sits astride the receiver's thighs with no body-length contact, and it does not record whether the receiver's hips stay against the surface or are lifted.

Identifiers in other vocabularies

How this position is denoted elsewhere, and what each mapping discards. Full table in the crosswalk.

  • Q116280298exact
  • prone_bonebroadershared with 1 other positions

    prone_bone constrains only the receiving body, flat on the stomach, penetrated from behind, and says nothing about the penetrating partner, so it discards the plank-above contact that defines this entry: the top partner lowered full-length onto the receiver with weight settling through the receiving pelvis. The tag equally covers the jockey arrangement, where the top partner sits astride the receiver's thighs with no body-length contact, and it does not record whether the receiver's hips stay against the surface or are lifted.

  • Clinging CicadacloseSu Nü Jing (Classic of the Plain Girl)

    Attested source name. The Nine Ways' prone press, named for a cicada flat against bark.

  • Vyanta-bandha (prone class)closeAnanga Ranga

    Attested historical name for this position in the named source; the source wording may describe a variant of the general form.

Actions this position admits

The position fixes who is where. These are the beats that are physically possible in it, from the action catalog. Contact through the characteristic beat is intermittent.

Idle / micro-motionPose settleApproachDisrobeCaressKissEntryThrust (shallow)Thrust (deep) (characteristic)Thrust and holdGrind (circular)Grind (rocking)RepositionClimax reactionAftermath

Camera moves that suit the geometry: Overhead descend, Arc (partial), Push in, Locked off.

Also known asflat doggyprone rear entryflatironspeed bumplazy doggy
Wikidata Q116280298 →

Related positions

Prone cowgirlReverse cowgirlReverse squatting cowgirlRusty tromboneSeated rear entry (lap ride)Side-by-side doggy
Back to CatalogUse in Generator

Part of the Erotic Pose Catalog open dataset · CC BY 4.0 · keypoints are idealised COCO-17 templates.